US teenagers may be facing a challenge (挑戰(zhàn)) today. A recent survey suggests (表明) that they are less honest than previous generations (上一代人).

The survey was done among 29,760 students at 100 US high schools. The results suggest that in the past year, 30 percent of US high school students have stolen from a store. And 64 percent may have cheated on a test.

However, 93 percent of the students said they were satisfied (滿意) with their honesty. And 77 percent said,“when it comes to doing what is right, I am better than most people I know.”

Some teachers were unhappy about the survey results. Some, however, defended (為……辯護(hù)) today’s students.

“The competition is greater and the pressures (壓力) on kids have increased greatly,”said Mel Riddle, who was a high school teacher and headmaster for 40 years.“It is the pressures that make it easy for students to be dishonest.”

“I think these students are better than other generations,”he said.“I find them more active, better to work with and more thankful for support.”“ We have to create situations where it’s easy for kids to do the right things, ”he added.“We need to create classrooms where learning is more important than having the right answer.”

1.According to the survey, what challenge do US teenagers face today?

A．They have trouble getting pocket money

B．They don’t get along well with teachers

C．They are not so honest as older generations

D．They have too many tests to take each week

2.We can learn from the survey that children in the US nowadays         .

A．behave worse

B．work harder

C．a(chǎn)re less healthy

D．a(chǎn)re busier at school

3.According to the survey results,   _ percent of the students are satisfied with their honesty.

A．30               B．64               C．77               D．93

4.What’s Mel Riddle’s opinion about the idea that students are dishonest?

A．He gets really angry about it

B．He thinks parents must do something to stop it

C．He thinks the students should change their behavior

D．He thinks there are some reasons for being dishonest

5.What advice does Mel Riddle give on improving the honesty of students?

A．Do not let students do anything

B．Make it easier for them to learn

C．Ask students to find right answers

D．Give students more free time to have fun

Performing better under pressure

What is the most stressful thing in school? It is probably exams．1.．??????? But some students succeed under pressure，while others struggle．So，why do some students perform better under stress?

It all comes down to dopamine （多巴胺）． Dopamine is a chemical in our body that sends signals （信號） in the brain．It has many important roles：affecting memory，attention and how we learn．2.．???????

Our brains control dopamine in two ways．It either takes out dopamine quickly，or gradually．Exam success can be linked to how fast dopamine goes back to a balance，according to new research from the University of Missouri，reported Yahoo．

???? 3.．?????? If you become stressed，your brain will start to overload （起負(fù)荷） on dopamine．It is like a cup overflowing with water．The quicker you are able to go back to a balance of dopamine，the quicker you can concentrate．4.．??????

Researchers found that，during a test，people who slowly got back to a balance of dopamine scored 8 percent lower． That’s me difference between a good mark and a bad mark．

??? But don't fear，there is good news for every student．5.．???? So，it turns out that practice really makes perfect．

根據(jù)短文內(nèi)容，從下面五個(gè)選項(xiàng)中選出能填入文中空缺處的最佳選項(xiàng)，使短文意思通順、內(nèi)容完整，并在答題卡上將該項(xiàng)涂黑。

A．This will help you perform better on a test．

B．Exams can put us under a lot of pressure．

C．The study also found that the more practice you get，the less stressed you’ll be．

D．What happens when we take an exam?

E．Our brains work best when there is a balance of dopamine—not too much or too little．